Civil Engineering - UPSC Civil Service Exam Questions - Discussion
Discussion Forum : UPSC Civil Service Exam Questions - Section 8 (Q.No. 2)
2.
A line of true length 500 m when measured by a 20 m tape is reported to be 502 m long. The correct length of the tape is
Discussion:
17 comments Page 2 of 2.
Saddam Haleem said:
7 years ago
"A" option is correct tape is too short so thats the reason it gives greater lenght as compared to actual lenght.
Shivu said:
8 years ago
Here,
500 = (x/20) * 502,
x = 19.92 m.
500 = (x/20) * 502,
x = 19.92 m.
Chhaya said:
8 years ago
Agree @Deepak Rawat.
(500/502) * 20 = 19.92.
(500/502) * 20 = 19.92.
Deepak rawat said:
8 years ago
Yes, it must be A.
It will take 25+1 length to measure 502 meter in 25 length it will measure 500 m and last one length it will measure 2m.
Actual length=19.92 measured = 20m.
L actual={19.92x25}+ 2 = 500m.
L mesrd=(20x25)+2 = 502m.
It will take 25+1 length to measure 502 meter in 25 length it will measure 500 m and last one length it will measure 2m.
Actual length=19.92 measured = 20m.
L actual={19.92x25}+ 2 = 500m.
L mesrd=(20x25)+2 = 502m.
Navi said:
8 years ago
The answer should be A.
Sumon said:
9 years ago
(TrueLength/MeasuredLength) = (IncorrectLength of Tape or Chain/Correct Length of Tape or Chain).
500/502 = 20/L,
L = 20.08m.
500/502 = 20/L,
L = 20.08m.
Manjunath Biradar said:
1 decade ago
500y = 502x20.
y = 502x20/500.
y = 20.08.
y = 502x20/500.
y = 20.08.
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